Double-layer component, method for producing a double-layer component and heat engine comprising a plurality of double-layer components

Abstract

The invention relates to a double-layer component (1) having a first layer (2) and a second layer (3), wherein the layers (2, 3) are connected to one another, wherein the two layers (2, 3) have different coefficients of thermal expansion, wherein the first layer (2) comprises a first plastic and the second layer (3) comprises a second plastic or carbon fibres, wherein the double-layer component (1) is reversibly deformable under the influence of heat. The double-layer component (1) is improved in that the double-layer component (1) can be inserted into a heat engine (4), wherein the thickness of the double-layer component (1) is at least 0.1 mm, wherein the thickness of the double-layer component (1) is 5 cm or less than 5 cm.

1 . Double layer component ( 1 ) with a first layer ( 2 ) and a second layer ( 3 ), said layers ( 2 ,  3 ) are connected to each other, wherein the two layers ( 2 ,  3 ) have different coefficients of thermal expansion, wherein the first layer ( 2 ) consists of a first polymer and the second layer ( 3 ) of a second polymer or carbon fibers, wherein the double layer component ( 1 ) is reversibly deformable under the influence of heat, characterized in that the double layer component ( 1 ) is insertable in a heat engine ( 4 ) wherein the thickness of the double layer component ( 1 ) is at least 0.1 mm, wherein the thickness of the double layer component ( 1 ) is 5 cm or less than 5 cm. 
     
     
         2 . Double layer component according to  claim 1 , characterized in that the thickness of the double layer component ( 1 ) is at least 0.5 mm. 
     
     
         3 . Double layer component according to one of the preceding claims, characterized in that the width of the double layer component ( 1 ) is in the range between 1 cm and 50 cm. 
     
     
         4 . Double layer component according to one of the preceding claims, characterized in that the length of the double layer component ( 1 ) is between 5 cm and 100 cm. 
     
     
         5 . Double layer component according to the preceding claim, characterized in that the length is between 10 cm and 20 cm. 
     
     
         6 . Double layer component according to one of the preceding claims, characterized in that the double layer component ( 1 ) has the shape of a stripe, wherein the length of the stripe is greater than the width and the thickness. 
     
     
         7 . Double layer component according to one of the preceding claims, characterized in that at least one of the layers ( 2 ,  3 ) consists of polyethylene wherein the polyethylene has a density of more than 0.955 g/cm 3  and or a degree of branching of less than 1.3 branches per 1,000 C atoms. 
     
     
         8 . Double layer component according to one of the preceding claims, characterized in that a layer ( 2 ) is made of stretched and annealed HDPE (High Density Polyethylene) and the other layer ( 3 ) is made of stretched and unannealed HDPE. 
     
     
         9 . Double layer component according to one of the preceding  claims 1  to  7 , characterized in that one layer comprises carbon fibers. 
     
     
         10 . Double layer component according to one of the preceding  claim 1  to  7  or  9 , characterized in that at least one of the layers comprises polyamide. 
     
     
         11 . Double layer component according to one of the preceding  claims 1  to  10 , characterized in that at least one of the layers has graphene as an additive. 
     
     
         12 . The heat engine ( 4 ) having a plurality of double layer components ( 1 ) according to one of the preceding claims, characterized in that the thermal motor ( 4 ) comprises a hub ( 5 ), a plurality of spokes ( 6 ) and a wheel ( 7 ), said spokes ( 6 ) are connected with the wheel ( 7 ) on the one hand and to the hub ( 5 ) on the other hand, wherein the spokes ( 6 ) are formed by double layer components ( 1 ). 
     
     
         13 . Heat engine ( 4 ) according to the preceding claim, characterized in that the hub ( 5 ) and or the wheel ( 7 ) are functionally effectively connected by springs ( 12 ,  13 ) radially to the rotational direction. 
     
     
         14 . A method for producing a double layer component according to one of the preceding claims, characterized in that at least one of the layers ( 2 ,  3 ) is produced by extrusion, wherein the layers are joined in a further step with each other. 
     
     
         15 . Method according to the preceding claim, characterized in that the layers ( 2 ,  3 ) are bonded together. 
     
     
         16 . Method according to the preceding claim, characterized in that the layers ( 2 ,  3 ) are connected by molten plastic. 
     
     
         17 . Method according to one of the preceding claims, characterized in that a plastic layer ( 23 ) by means of an extruder ( 21 ) is applied to a carbon fiber layer ( 20 ), wherein the applied plastic layer ( 23 ) and/or the carbon fiber layer ( 20 ) is heated, whereby the plastic layer ( 23 ) and the carbon fiber layer ( 20 ) are compressed.